Career
He bats and throws right-handed. While attending Seoul High School in Seoul, An was considered one of the top shortstops in the Korean high school baseball league. In August 2007, he was selected for the South of Korea national junior baseball team and participated in the Asian Junior Baseball Championship held in Taichung, Taiwan.
In 2008, An was selected for the South of Korea national junior baseball team again to compete at the World Junior Baseball Championship, where they claimed their fifth tournament title.
In the tourney, he batted.333 (10-for-30) with 8 RBIs and 8 runs, playing in all 8 games as a second and third baseman, and was named Best Defensive Player. Notable international careers Drafted by the Kia Tigers in the 2nd round (1st pick, 9th overall) of the 2009 KBO Draft, An made his pro debut on April 4, 2009.
On July 2, he became the fourth straight-from-high-school rookie to hit double digit home runs in KBO history, smacking two home runs against the Samsung Lions. An was selected for the Best 10 of the 2009 KBO All-Star Game.
He became the first rookie player to earn the All-Star Best 10 honors since Lee Byung-Kyu and Jin Kab-Yong in 1997.
In the All-Star Game in Gwangju on July 25, A hit a two-run home run in the 5th inning, which made him the youngest ever to be named KBO All-Star Game Most Valuable Player. An finished his rookie season with a batting average of.235 (44th in the league) and 14 home runs. Awards and honors 2009 All-Star Game Most Valuable Player.